MESON Chess Problem Database

Problem Display
PID: 75719 (KB6/1p1P1p1q/prpn1P2/2k1N3/PrNn2bR/5P2/B2Q4/1R6 w - - 0 1)

Arnstam, Knut Anders Olof

1st HM., Raketa, 1941

KB6/1p1P1p1q/prpn1P2/2k1N3/PrNn2bR/5P2/B2Q4/1R6

#2

12 + 11

136 Problem Observer 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3
      • 2.Qxd4#
    • 1...Bh3
      • 2.Qxd4#
    • 1...Bf5
      • 2.Qxd4#
    • 1...Bh5
      • 2.Qxd4#
    • 1...Be6
      • 2.Qxd4#
    • 1...Bxd7
      • 2.Qxd4#
    • 1...Sc2
      • 2.Bxd6#
      • 2.Qxd6#
    • 1...Se2
      • 2.Bxd6#
      • 2.Qxd6#
    • 1...Sb3
      • 2.Bxd6#
      • 2.Qxd6#
    • 1...Sxf3
      • 2.Bxd6#
      • 2.Qxd6#
    • 1...Se6
      • 2.Bxd6#
      • 2.Qxd6#
  • Tries
    • 1.Sd3+?
      • 1...Kd5
        • 2.Se3#
        • 2.Sxb6#
      • 1...Qxd3!
    • 1.Qxb4+?
      • 1...Kd5
        • 2.Qxd6#
      • 1...Rxb4!
  • Keys
    • 1.d8Q!
      • threat
        • 2.Qxd6#
      • 1...Kd5
        • 2.Qxd6#
      • 1...Sxc4
        • 2.Q2xd4#
        • 2.Q8xd4#
      • 1...Bd7
        • 2.Qxd4#
      • 1...S4b5
        • 2.Qxb6#
      • 1...S4f5
        • 2.Sd7#
      • 1...Se4
        • 2.Sd3#
        • 2.Q2xd4#
        • 2.Q8xd4#
      • 1...S6b5
        • 2.Qxb4#
      • 1...S6f5
        • 2.Sd3#
      • 1...Sc8
        • 2.Q2xd4#
        • 2.Q8xd4#
      • 1...Se8
        • 2.Q2xd4#
        • 2.Q8xd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • B(c);XP(D)::QAB1(C),XS(b)
    • B(c);::QAB1(C),XS(b)
    • B(c);XP(J)::QAB1(C),XS(b)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • Q(k);XS(H)
    • Try
      • Q(C);CHECK,XR(a)
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(C),XS(h)
      • Refutation
        • R(f);XQ(C)
  • Actual
    • P(J);
    • Threat
      • QAB1(J),XS(h)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(b)::QAR1(J),XS(h)
      • B(c);::QAB1(C),XS(b)
      • S(b);S_CUTR(a)::QAB1(J),XR(f)
      • S(b);S_CUTB(c)::S(H)
      • S(h);S_CUTR(f)::QAB1(C),XR(a)
      • S(h);S_CUTQ(k)::S(H)
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